Improved roofing composition



UNITED STATES )NICOLAUS- GROH, 0F HELENVILLE, WISCQNSINL it IMPROVED RooFme COMPOSITION,

Specification forming part of Letters Patent No. 47,416,]datridApril 25, 18651 5 I To aZ-Z whom itmay concern.-

Be it known that I, NIOOLAUS GROH, of

Helenville, in the county of Jefferson and State of 'Wisconsin, have invented a new and Improved Roofing Composition; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to fully understand and make use of the same.

This invention relates to a roofing compound which is perfectly impervious to water, ,and

a which is also fire-proof.

The compound is made of asphalt, sand, iron filings, wood-ashes, and hydraulic lime or cement, and these ingredients are mixed together in about the following proportion: asphalt, fifty parts; sand, 'fifty parts; iron filings, nine parts; wood ashes, six parts; hydraulic cement, nine parts.

The asphalt is melted over a slow fire, and the sand, iron filings, ashes, and cement are first passed through sieves of greater or less fineness, ac-.

cording to the nature of the compound desired,

and they are then gradually stirred in the pounds is that it is fire-prooilfl PATENT OFFI E- ,1

be put directly on the roofing-board, or stout paper or canvas maybe placedqbetwee andtheboards. i My compound may alsobe used with a vantage for sidewalks, cellar floors, and oth similar purposes; but in that case, instea of sand, small pebble-stones haveto beused,

small pebbles mustbe mixed with the co pound. 9 Q a The ashes which I use by preferenceisth obtained by burning maple, though I do n wish to confine myselfto one particu1arlind of ashes, but reservethe right to use ashes any kind of wood which I may think jpropc My compound is cheap, it can be readil applied to roofsof any description, and one of its chief advantages over other similar I claim as new and desire to ters Patent v a i Aroofing compound made of the ingredien herein described, and :nfixed together abouti the proportion and substantially in the manner herein set forth, 1 a

a nico nuscnon secure by Le Witnesses:

I. W. B1131), a GOTTLIEB MUQK. 

